Need a little guide with sex position, it’s like I forgot to have sex!

First off I know I have seen this question but I can’t find it to read the comments….

So my boyfriend and I are still working with each other on having sex. We have gotten better by adding little things. Last night was our first time of me doing cowgirl on him. Reverse was not going at planned and cowgirl he kept slipping out. It was terrible everything else was fine.

It was a good but bad night. He also used his vibrator which I have only used once in the past.

I did it with my last parter but it’s been so long at least 6 yrs. It’s like I forgot to have sex. Literally !

I need a guide on being on top of him.

Like do I bounce or move up and down.

Tips and tricks give them all to me being on top.

I also can’t get doggy right still. It is actually one of the positions I don’t like but at the same time I have to be fair.

I’m also plus size that I am in the process of losing weight. I want to lose like 25 pounds. He has lost weight I was just delayed.

So help a little please